Zinc
Also known as: zinc oxide, zinc gluconate, zinc picolinate
Effective Dosage
8-11mg/day (RDA), up to 40mg/day upper limit
✓ What the Science Says
Essential for immune function, wound healing, protein synthesis. Deficiency impairs immunity.
✗ What It Doesn't Do
Won't 'supercharge' immune system if you're not deficient. Excess can cause copper deficiency.
Evidence-Based Benefits
Essential for immune function, wound healing, protein synthesis. Deficiency impairs immunity.
Strong EvidenceEffective at: 8-11mg/day (RDA), up to 40mg/day upper limit
Source: NIH ODS
Absorption & Bioavailability
Varies by form. Picolinate and gluconate better than oxide.
Red Flags to Watch For
- 🚩 Doses over 40mg/day long-term
- 🚩 Using cheap zinc oxide form
Products Containing Zinc
See how Zinc is used in these analyzed products:
Research Sources
- NIH ODS
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-02-04